LIGHT DOSIMETRY - EFFECTS OF DEHYDRATION AND THERMAL-DAMAGE ON THE OPTICAL-PROPERTIES OF THE HUMAN AORTA

CILESIZ I., WELCH A.

APPLIED OPTICS, cilt.32, sa.4, ss.477-487, 1993 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Sayı: 4
  • Basım Tarihi: 1993
  • Doi Numarası: 10.1364/ao.32.000477
  • Dergi Adı: APPLIED OPTICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.477-487
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

The influences of dehydration and thermal damage on in vitro optical properties of human aorta were studied. The absorption coefficient increased by 20-50%, especially in the visible range when at least 40% of total tissue weight was lost as a result of dehydration. The reduced scattering coefficient increased by 10-45% in the visible and 30% to over 150% in the near IR after the tissue samples were heated in a constant temperature water bath at 100-degrees-C for 300 +/- 10 s. This study implies that dehydration and protein coagulation during photothermal treatment of tissue are important factors altering optical properties of tissue.